
/*
 * Copyright 2011 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#include "SampleCode.h"
#include "SkColorPriv.h"
#include "SkShader.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkUtils.h"

static SkBitmap make_bitmap()
    {
    SkBitmap bm;
    const int N = 1;
    SkColorTable* ctable = new SkColorTable(N);

    SkPMColor* c = ctable->lockColors();
    for (int i = 0; i < N; i++)
        {
        c[i] = SkPackARGB32(0x80, 0x80, 0, 0);
        }
    ctable->unlockColors(true);
    bm.setConfig(SkBitmap::kIndex8_Config, 1, 1);
    bm.allocPixels(ctable);
    ctable->unref();

    bm.lockPixels();
    for (int y = 0; y < bm.height(); y++)
        {
        uint8_t* p = bm.getAddr8(0, y);
        for (int x = 0; x < bm.width(); x++)
            {
            p[x] = 0;
            }
        }
    bm.unlockPixels();
    return bm;
    }

class TinyBitmapView : public SampleView
    {
        SkBitmap    fBM;
    public:
        TinyBitmapView()
            {
            fBM = make_bitmap();
            this->setBGColor(0xFFDDDDDD);
            }

    protected:
        // overrides from SkEventSink
        virtual bool onQuery(SkEvent* evt)
            {
            if (SampleCode::TitleQ(*evt))
                {
                SampleCode::TitleR(evt, "TinyBitmap");
                return true;
                }
            return this->INHERITED::onQuery(evt);
            }

        static void setBitmapOpaque(SkBitmap* bm, bool isOpaque)
            {
            SkAutoLockPixels alp(*bm);  // needed for ctable
            bm->setIsOpaque(isOpaque);
            SkColorTable* ctable = bm->getColorTable();
            if (ctable)
                {
                ctable->setIsOpaque(isOpaque);
                }
            }

        virtual void onDrawContent(SkCanvas* canvas)
            {
            SkShader* s = SkShader::CreateBitmapShader(fBM, SkShader::kRepeat_TileMode,
                          SkShader::kMirror_TileMode);
            SkPaint paint;
            paint.setShader(s)->unref();
            canvas->drawPaint(paint);
            }

    private:
        typedef SkView INHERITED;
    };

//////////////////////////////////////////////////////////////////////////////

static SkView* MyFactory()
    {
    return new TinyBitmapView;
    }
static SkViewRegister reg(MyFactory);

